OPERATION 16. REAR WINDOW DEFROSTER Switch (1) energizes a timing circuit to power the window defroster. Place the defroster switch to ON and the system will operate approximately 10 minutes, long enough in most cases to clear the window. 17. ETHER START SWITCH WARNING Do not keep this switch at the “ON” position for more than five seconds. This switch is used when starting the engine in cold weather. C. ON POSITION: A fixed amount of ether (approx. 3 cc each time) is injected into the engine air intake to make it easier to start the engine in cold weather. D. OFF POSITION: When the switch is released, it automatically returns to the OFF position. 2-20 WA320-3MC